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Priority to JP1975099217UpriorityCriticalpatent/JPS5721172Y2/ja
Priority to US05/704,445prioritypatent/US4037262A/en
Priority to CA257,003Aprioritypatent/CA1072675A/en
Priority to DE2632670Aprioritypatent/DE2632670C2/de
Publication of JPS5213811UpublicationCriticalpatent/JPS5213811U/ja
Application grantedgrantedCritical
Publication of JPS5721172Y2publicationCriticalpatent/JPS5721172Y2/ja